Bash Scripting Training — Linux Automation, CI/CD Scripts & System Administration

Why Bash Matters in DevOps & Automation

Bash is the native language of Linux — the default shell on virtually every Linux server, container, and CI/CD runner. Every Jenkins pipeline runs Bash. Every GitHub Actions workflow has Bash steps. Every Dockerfile runs Bash commands. Bash is not glamorous, but it's everywhere — and knowing it deeply means you can automate anything on Linux without installing anything. This course teaches Bash scripting for real DevOps scenarios: CI/CD pipeline scripts, infrastructure automation, log processing, and system administration at scale.

Who Should Attend

• DevOps engineers writing CI/CD pipeline scripts and automation
• System administrators automating Linux server operations
• Cloud engineers needing shell scripting for cloud-init and bootstrap
• Anyone working with Linux who wants to move from one-liners to production scripts

Learning Outcomes

• Write production-quality Bash scripts with error handling, logging, and argument parsing
• Process and transform text with awk, sed, grep, and jq for log analysis and configuration
• Build CI/CD pipeline scripts that run in Jenkins and GitHub Actions
• Automate system administration — user management, disk monitoring, service management
• Write Docker entrypoint scripts and container health checks
• Debug and optimize Bash scripts — shellcheck, set -eux, trap, signal handling

Course Modules

1. Bash Fundamentals — Variables, conditionals, loops, functions. Exit codes. Shebang. Good scripting practices.
2. Error Handling & Debugging — set -e, -u, -x, -o pipefail. trap. Logging. Shellcheck. Debugging techniques.
3. Text Processing — awk, sed, grep, cut, sort, uniq, tr. Parsing logs. Transforming config files. jq for JSON.
4. Argument Parsing & CLI Design — getopts. Positional arguments. Help text. Configuration files. Interactive scripts.
5. Bash in CI/CD — Jenkins pipeline sh steps. GitHub Actions run steps. Multi-line scripts. Secrets handling.
6. System Administration Automation — User management. Disk monitoring. Process management. Systemd service scripting.
7. Docker & Container Scripting — Entrypoint scripts. Health checks. Dockerfile RUN vs. script. Container init.
8. Capstone: Bash Automation Suite — Build a suite of Bash scripts for server provisioning, monitoring, and CI/CD.

Hands-on Labs (18 total)

Write a Bash script that deploys a web application with health check and rollback. Build a log analysis script that parses Apache logs and generates a JSON report. Create a Jenkins pipeline library script. Write a Docker entrypoint with signal handling. Automate user creation from CSV with error handling and logging.

CI/CD & Cloud Operations Examples

• Bash scripts in Jenkins pipelines for build, test, deploy orchestration
• GitHub Actions composite actions written in Bash
• Cloud-init and user-data scripts for AWS EC2 bootstrap
• Docker entrypoint and health check scripts
• Kubernetes init container scripts

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